Lovely picture! And actually a place I’ve been to. I did a rather simple edit. Some color tweaking, getting rid of the substantial purple fringes and a nice crop. All using RawTherapee 5.5 (dev version).

Nice (almost) monochrome image @gRuGo. Here is amy version with GIMP 2.10.6.
I made water smooth, sky dark, buildings sharp and dark and then adjusted levels and used curves to accentuate the city glow in the sky. Aim was to give it a Graphic Novel cityscape kind of feel (A Manga look).